[ATM]: atmarp.h needs to always include linux/types.h

To provide the __be* types, even for userspace includes.

Reported by Andrew Walrond.
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/atmarp.h

@@ -6,9 +6,7 @@
 #ifndef _LINUX_ATMARP_H
 #define _LINUX_ATMARP_H
 
-#ifdef __KERNEL__
 #include <linux/types.h>
-#endif
 #include <linux/atmapi.h>
 #include <linux/atmioc.h>